This cognitive/performance module is designed to teach the use of diagnostic techniques beyond those techniques provided by traditional mass testing. Terminal objectives include: (a) identifying a learning goal, (b) identifying a child who cannot successfully accomplish the learning goal, (c) diagnosing the child's learning strengths and weaknesses and presenting these to a team of peers, and (d) trying instructional activities with the child and providing feedback to peers who designed the activities. To accomplish these objectives, participants investigate the principles underlying assessment and evaluation, survey the instruments of assessment and evaluation currently used in the schools, investigate alternative ways of assessing and evaluating, and explore the language of assessment and evaluation. Learning activities include reading, film viewing, participating in seminars and experimental demonstrations, assessing, evaluating, and interviewing. A flow chart illustrating specific steps of the module is included. (PD)